CN102248780A - Liquid ejecting unit and liquid ejecting apparatus - Google Patents
Liquid ejecting unit and liquid ejecting apparatus Download PDFInfo
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- CN102248780A CN102248780A CN2011101140212A CN201110114021A CN102248780A CN 102248780 A CN102248780 A CN 102248780A CN 2011101140212 A CN2011101140212 A CN 2011101140212A CN 201110114021 A CN201110114021 A CN 201110114021A CN 102248780 A CN102248780 A CN 102248780A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/055—Devices for absorbing or preventing back-pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2002/14403—Structure thereof only for on-demand ink jet heads including a filter
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- Ink Jet (AREA)
Abstract
The invention provides a liquid ejecting unit and a liquid ejecting apparatus that can prevent the film of the damper flow passage member from wrinkling. In a surface of a damper flow passage member covered with a film, a communication passage, a first filter chamber in which a first filter is disposed, and an empty chamber disposed between a pressure chamber and the communication passage are provided. The film is attached to a surface of each of the pressure chamber, the empty chamber, and the communication passage so as to cover a first flow passage and a second flow passage with the empty chamber therebetween. In a region of the film facing the empty chamber, a weak portion is formed that permits the stretching of the film.
Description
Technical field
The present invention relates to have the liquid ejection unit and the liquid injection apparatus of the jet head liquid of ink jet recording head etc.
Background technology
As by making the liquid in the balancing gate pit produce pressure oscillation, and has following jet head liquid from the jet head liquid of nozzle ejection with the form of drop, for example, has following injector head, promptly, be used for ink-jet recording apparatus (below, singly refer to printer) etc. the ink jet recording head (below, singly refer to record head) of image recording structure, the look material injector head that in the manufacturing of the colored filter of LCD etc., uses, organic EL (Electro Luminescence) display, the electrode material injector head that in the electrode of FED (display that face is luminous) etc. forms, uses, the organism organic matter that uses in biochip (biochemical element) is made sprays first-class.
For example, in above-mentioned record head, print cartridge (liquid supply source a kind of of liquid China ink will be enclosed, with the finger writing or painting box that places an order) in China ink import the balancing gate pit via the fluid reservoir (common liquid chamber) of record head, drive piezoelectric vibrator, heater element equal pressure generating mechanism to the change of exerting pressure of the China ink in the balancing gate pit, and utilize this pressure oscillation, from the nozzle ejection China ink that is communicated with the balancing gate pit.For the record head of this formation, also have and be arranged at and make up and formation ink jet head unit (for example, referring to Patent Document 1) from the stream formation parts midway (also be referred to as self-enclosed unit or regulate channel member) of print cartridge to the stream of record head supply China ink.This stream form parts within it the stream of portion be provided with open and close valve midway and (also be referred to as self-enclosed valve.), and one one of this stream by thin membrane sealed.And, thereby ink droplet becomes negative pressure from the inside of the nozzle ejection fluid reservoir of record head, follows in this film push switch valve to opening the direction bending, and thus, switch valve is opened and will supplies with the fluid reservoir side of record head from the China ink of print cartridge.
In addition, proposing has following record head, promptly, form in the parts at stream, goes into the record head side in order to prevent the gentle burble of foreign matter in the stream, and disposes filter midway at stream.And when the cleaning action of discharging China ink and bubble from the nozzle of record head forcibly, if more reduce pressure by in the filter chamber of upstream side than filter, thereby then film is out of shape the stream that dwindles China ink to the inside, can discharge bubble easily thus.The record head of Gou Chenging is to prevent to be trapped in the structure that stream forms the gas bubble blockage filter chamber in the parts like this.And, also propose to have following scheme, promptly, make during for suction function in cleaning film easily to the distortion of filter one side, and carry out under the crooked energetically state in the part of film that will be corresponding with filter, apply by ultrasonic wave coating and hot melt and make that this film is deposited to form parts in stream.
[patent documentation 1] Japan Patent spy opens the 2009-184202 communique
, when above-mentioned stream formed the deposited film of one side of parts, when engaging to the state of the bent film of a lateral bending of filter, the regional film beyond in the filter chamber was pulled into filter chamber's side, thereby produces wrinkle sometimes on film.If the film on the stream has played wrinkle, then might cause forming part and retain bubble at these wrinkle.In addition, because the miniaturization of record head in recent years, because of the problem of catching bubble at film generation wrinkle becomes more remarkable.
Summary of the invention
The present invention finishes in view of such thing, and its purpose is to provide a kind of liquid ejection unit that can prevent to produce wrinkle on the film of regulating channel member, and liquid injection apparatus.
To achieve these goals, liquid ejection unit of the present invention has:
Jet head liquid, it is from nozzle ejection liquid;
Regulate channel member, it is configured in the upstream side of aforesaid liquid injector head, and accept from the liquid of liquid supply source and be supplied to aforesaid liquid injector head side,
One side at least at above-mentioned adjusting channel member is formed with the 1st stream and the 2nd stream, and the 1st stream and the 2nd stream are to be the state of free chamber to form with the between setting, in the 1st stream, be equipped with first filter that liquid is filtered, be equipped with the 2nd filter midway at the 2nd stream, and at least one adhered film at above-mentioned adjusting channel member, by this film, above-mentioned the 1st stream, above-mentioned the 2nd stream and above-mentioned empty chamber are closed with separate respectively state;
Be formed with the frangible portion of allowing film stretching at above-mentioned film with opposed zone, above-mentioned empty chamber.
According to said structure, so that the crooked to the inside state of the part corresponding with the 1st stream film is attached at when regulating channel member, or be subjected to negative pressure and when crooked to the inside, frangible portion is allowed the stretching of film, so can suppress that tension force prolongs and to the 2nd stream at the film corresponding with the 1st stream.Thus, can be suppressed in the film with the opposed zone of the 2nd stream and produce wrinkle.Its result can prevent to make bubble be captured because of wrinkle.
In the above-described configuration, preferably, the direction setting that frangible portion is intersected along the orientation with above-mentioned the 1st stream, above-mentioned the 2nd stream and above-mentioned empty chamber.
According to above-mentioned formation, because frangible portion is provided with along the direction of intersecting with the orientation of the 1st stream and the 2nd stream and empty chamber, so can absorb the tension force of the orientation of the 1st stream and the 2nd stream and empty chamber easily.Thus, in film,, more can suppress the generation of wrinkle with the 1st stream and the opposed zone of the 2nd stream.
In the above-described configuration, can adopt following formation, promptly, above-mentioned frangible portion be by along and the above-mentioned orientation direction of intersecting and the slit that forms constitutes.
According to said structure, because frangible portion is to be made of the slit that the direction that edge and orientation intersect forms, so can easily on film, form frangible portion.In addition, frangible portion is yielding when producing tension force on film, even and also be difficult to produce wrinkle when distortion.
In the above-described configuration, also can adopt following formation, promptly, above-mentioned frangible portion be by along and the above-mentioned orientation direction of intersecting a plurality of through holes of arranging setting constitute.
In the above-described configuration, preferably, above-mentioned film to be can changing and crooked state is attached at above-mentioned adjusting channel member according to the pressure in above-mentioned the 1st stream with the opposed zone of above-mentioned the 1st stream in this film,
Above-mentioned frangible portion is formed at the position that above-mentioned the 2nd stream more is partial to above-mentioned the 1st stream side of comparing in the above-mentioned empty chamber.
According to above-mentioned formation, because being formed in the sky chamber, frangible portion more is partial to the position of the 1st stream side, so can positively suppress to produce wrinkle with the opposed zone of the 2nd stream than the 2nd stream.
In addition, liquid injection apparatus of the present invention is characterised in that to have:
Above-mentioned each liquid ejection unit that constitutes;
The liquid supply source that the liquid that the above-mentioned adjusting stream of subtend portion supplies with accumulates.
Description of drawings
Fig. 1 is the vertical view that the formation to printer describes.
Fig. 2 constitutes the stereogram that describes to black injection unit.
Fig. 3 is the major part cutaway view of record head.
Fig. 4 is a stereogram of regulating the road stream unit.
Fig. 5 is a vertical view of regulating channel member.
Fig. 6 is the X-X line cutaway view among Fig. 4.
Fig. 7 is the Y-Y line cutaway view among Fig. 4.
Fig. 8 is the expanded view that the formation to frangible portion describes.
Fig. 9 is the concise and to the point cutaway view that deposited operation is described.
Figure 10 is the expanded view that the formation in another embodiment frangible portion describes.
Symbol description
1... printer; 2... liquid ejection unit; 13... print cartridge; 20... record head; 21... adjusting channel member; 22... film; 43... nozzle; 50... import the channel member main body; 52... the 1st filter; 53... the 2nd filter; 62... division portion; 65... self-enclosed valve; 66... the 1st filter chamber; 67... pressure control chamber; 70... empty chamber; 87... through hole; 88... frangible portion; 94... slit.
The specific embodiment
Below, describe being used to implement best mode of the present invention with reference to accompanying drawing etc.In the embodiment of the following stated,, various qualifications have been carried out as the preferred object lesson of the present invention.But, scope of the present invention, short of in the following description special qualification record of the present invention just is not limited to these concrete row.In addition, in the present embodiment,, exemplified the ink jet recording head that is equipped on as a kind of inkjet recording device of liquid injection apparatus (below be referred to as " record head ") and described as an example of jet head liquid.
Fig. 1 is the vertical view of the structure of the expression inkjet recording device (hereinafter referred to as printer) that carries black injection unit 10 (Fig. 2).Illustrative printer 1 is the device that the liquid China ink (the present invention is equivalent to liquid) of jet surface of the recording medium of record-paper etc. (hit object: not shown) is carried out document image etc.This printer 1 has framework 2, is equipped on the original text platform 3 in this framework 2, and the feeding-in roll (all not shown) by rotating because of the driving of paper pushing motor is transported to record-paper on the original text platform 3.In addition, set up guide rod 4 abreast with original text platform 3 in the framework 2, slidably be supported with balladeur train 5 on this guide rod 4,5 pairs of this balladeur trains have the black injection unit 10 of record head 20 and accommodate.At the driving pulley 7 that rotates by the driving of impulse motor 6 be arranged to have set up between the rotation idler pulley 8 framework 2 and these driving pulley 7 opposition sides and be with 9 synchronously, this balladeur train 5 is with 9 to be connected with this synchronously.And,, balladeur train 5 is come and gone at the main scanning direction with the paper feeding direction quadrature along guide rod 4 moves by driving pulse motor 6.
Be provided with the cassette holder 14 that carries print cartridge 13 (liquid supply source a kind of) in removable mode in a side of framework 2.Print cartridge 13 is connected with air pump 16 via air hose 15, supplies with in each print cartridge 13 from the air of this air pump 16.And, cause pressurization in the print cartridge 13 by this air, thus by black supply pipe 17 to black injection unit 10 sides supply (force feed) China ink.
China ink supply pipe 17 is for example to use the flexual hollow part that has that the synthetic resin of silicone etc. makes, and the inside of this China ink supply pipe 17 is formed with the black stream corresponding with each print cartridge 13.In addition, between printer 1 main body side and black injection unit 10 sides, be equipped with the FFC (flexible ribbon cable) that is used for driving to black injection unit 10 sides transmission signal etc. from the control part (not shown) of printer 1 main body side.
In addition, the formation about black injection unit 10 describes.Herein, Fig. 2 is mounted in the stereogram of the black injection unit 10 on the balladeur train 5, and Fig. 3 is the major part cutaway view of the record head 20 of black injection unit 10.Illustrative black injection unit 10 has: record head 20 (being equivalent to the jet head liquid among the present invention), this record head have the nozzle that is formed with nozzle 43 and form substrate 36; Regulate channel member 21, this component configuration is in the top of record head 20, i.e. the upstream side of record head 20.
Drive method and flexible cable 32 electricity of substrate 28 1 ends by welding etc. and connect, the other end connects the FFC18 from the printer main body side, is driven signal by this FFC from the control part side joint, makes this driving signal pass through flexible cable 32 and supplies with to piezoelectric vibrator 31 sides.This driving substrate 28 keeps posture by being arranged in the substrate maintaining part 56 of regulating channel member 21, and this substrate is with respect to holding up above the record head shell 25 and state that real estate is parallel with the nozzle rows direction and be disposed at the top central portion of record head shell 25.
In addition, the structure that the China ink in the print cartridge 7 is imported the adjusting channel member 21 of record head 20 is described.Fig. 4 is a stereogram of regulating channel member 21, and Fig. 5 is a vertical view of regulating parts 21, and Fig. 6 is the X-X line cutaway view among Fig. 4.
Regulating channel member 21 roughly is made of following parts, promptly, by using synthetic resin etc. to be shaped to long rectangular-shaped importing channel member main body 50, be formed at the inside, the 1st and the 2nd of this importings channel member main body 50 in the nozzle rows direction, and import road 51 (being equivalent to stream of the present invention), be configured in 52,53 formations of filter midway that China ink imports road 51 to the China ink that record head 20 is supplied with China ink.This adjusting channel member 21 is with the posture of holding up with respect to nozzle face and with overlapping state configuration (cardinal extremity face of record head 20) above record head shell 25, the screw 54 that is inserted into the fixing hole 57 that is formed at the length direction two ends from record head 20 sides is rotated with nut 55, this adjusting channel member 21 is fixed.
Import article body 50 and above the both sides of length direction be formed with the black entrance hole 58 that is connected with black supply pipe 17 via liner (not shown) respectively.The both sides of length direction below are formed with the connecting hole 59 that is connected with the inlet opening portion 35 of record head 20, and be formed with a pair of connecting hole with respect to a black entrance hole 58, add up to 4 connecting holes, comprise that a series of stream that China ink imports road 51 is formed between separately the black entrance hole 58 and connecting hole 59.That is, importing article body 50 in the present embodiment, corresponding with 2 black entrance holes 58, with mutually independently state be formed with 2 China inks and import roads 51.In addition, be provided with the substrate maintaining part 56 of up/down perforation, keep inserting to lead in the driving substrate 28 of substrate maintaining part 56 at the central portion that imports channel member main body 50.
Supply to the China ink of the black entrance hole 58 in (in Fig. 5,6 left side), at first shown in arrow A among Fig. 5,,,, flow into the 1st filter chamber 66 of the 50a that is formed at the 1st by the connected entrance shown in Fig. 4,6 63 towards the upside of Fig. 5 by internal flow path 51a.The China ink that flows into the 1st filter chamber 66 by being configured in the 1st filter chamber 66 the 1st filter 52 and be filtered after, along the downside of internal path 51a, when self-enclosed valve 65 described later is opened, flow into the pressure control chamber 67 of the 50b that is formed at the 2nd towards Fig. 5.Flow into the China ink of the 2nd pressure control chamber 67, towards vertical stream 69, and flow into the 2nd filter chamber 68 along indulging stream 69 to flow down by a pair of up and down access 64a, 64b.After the China ink that flows into the 2nd filter chamber 68 is filtered by the 2nd filter 53 that is arranged at the 2nd filter chamber 68, respectively towards 2 connecting holes 59 that are communicated in the 2nd filter chamber 68, from the inlet opening portion 35 of these connecting holes 59, be fed into shell stream 34 by record head 20.
Equally, be fed into the China ink of another (Fig. 5,6 right side) black entrance hole 58, shown in the arrow B of Fig. 5, by internal flow path 51b,, flow into the 1st filter chamber 66 of the 50b that is formed at the 2nd by connected entrance 63 towards the downside of Fig. 5, behind the 1st filter 52, along the upside of internal flow path 51b, when self-enclosed valve 65 is opened, flow into the pressure control chamber 67 of the 50a that is formed at the 1st towards Fig. 5.Flow into the China ink of the 2nd pressure control chamber, towards vertical stream 69, and flow down and flow into the 2nd filter chamber 68 along indulging stream 69 by a pair of up and down access 64a, 64b.After the China ink that flow into the 2nd filter chamber 68 is filtered by the 2nd filter 53 that is arranged at the 2nd filter chamber 68, respectively towards two connecting holes 59 that are communicated in the 2nd filter chamber 68, from the inlet opening portion 35 of these connecting holes 59, be fed into shell stream 34 by record head 20.
In the two sides that import article body 50, promptly the 1st 50a and the 2nd 's 50b by from the outstanding division wall of each face, divide division portion 62 such as lug, nib and form the surface current road respectively, and this surface current road has constituted the part on black importing road 51.The surface current road that is formed at 50a, the 50b of each face becomes by the center of the substrate maintaining part 56 that imports article body 50 and with the imaginary central axis perpendicular to top and bottom and is rotational symmetric relation.Surface current route the 1st filter chamber 66, pressure control chamber 67, the vertical stream 69 that forms along the short transverse that imports article body 50, be communicated with a pair of up and down access 64a, 64b between pressure control chamber 67 and the vertical stream 69, the 2nd filter chamber 68 that is arranged at the downside of vertical stream 69 forms.In this surface current road, the 1st filter chamber 66 is parts that 2 China inks import a stream in the road 51, is equivalent to the 1st stream among the present invention.In addition, in the surface current road, pressure control chamber 67, access 64a, 64b, vertical stream 69 and the 2nd filter chamber 68 are parts that 2 China inks import another stream in the road 51, and vertical stream 69 is equivalent to the 2nd stream among the present invention.In addition, setting is free chamber 70 between the 1st filter chamber 66 and vertical stream 69.This sky chamber 70 is the zones that fenced up by the division portion 62 that divides the 1st filter chamber 66, vertical stream the 69, the 1st filter chamber 66 respectively, and also is not communicated with any one black stream 51, but becomes the space that independently goes out from these streams.Jimo does not flow into this sky chamber 70.
The 1st 50a of importing article body 50 and the 2nd moral 50b attach respectively has flexual thin film 22.This film 22, as described later, by hot melt apply or ultrasonic wave coating and with the end joined of division portion 62.Each opening surface of the 1st filter chamber 66, pressure control chamber 67, access 64a, 64b, vertical stream the 69, the 2nd filter chamber 68 and empty chamber 70 is closed by this film 22.In other words, the 1st stream, the 2nd stream and empty chamber 70 by film 22 respectively with mutually independently state be closed.
Fig. 7 is the cutaway view of the Y-Y line among Fig. 4.The 1st filter chamber 66 is the empty portions of overlooking the essentially rectangular shape that are communicated with the pressure control chamber 67 that is arranged at the another side by connecting ventilating part 71.The 1st filter chamber 66 is disposed in the China ink importing road 51 and compares more upstream side of the 2nd filter chamber 68.The bottom of the 1st filter chamber 66 be formed with the state that stop up to connect ventilating part 71 come the spring base of mounting spring seat 73 that end difference 74 is installed, the filter that is formed with shallow one-level in the face direction outside that this spring base is installed end difference 74 installs end difference 75.At filter end difference 75 being installed is frame shape ground along the flat shape of the 1st filter chamber 66 and is formed with filter installation rib 76.And, the 1st filter 52 with the parallel posture in two sides that imports article body 50, depositedly be fixed in the leading section that filter is installed rib 76.Pressure control chamber 67 is the empty portions of accommodating compression plate 77 described later.The bottom of this pressure control chamber 67 has been offered for the axial region 78 of self-enclosed valve 65 and has been inserted logical inserting hole 79.
Herein, self-enclosed valve 65 is described.Self-enclosed valve 65 carries out following action, promptly, record head 20 sprays China ink and makes the pressure of common black chamber 40 descend from nozzle 43, follow in this, when regulating pressure in the channel member 21 with respect to the relative decline of external pressure, self-enclosed valve 65 is opened and is allowed that China ink is logical to pressure control chamber 67 effluents from the 1st filter chamber 66.That is, be under the authorized pressure, under the situation of the state that China ink is supplied to from black entrance hole 58, accumulating enough when black when the common black chamber 40 of record head 20, self-enclosed valve 65 becomes closed condition.And if China ink from nozzle 43 spray make than self-enclosed valve 65 more the pressure in downstream descend, thereby then make self-enclosed valve 65 become the open mode China ink in the negative pressure of this generation to be supplied to because of following.
As shown in Figure 7, self-enclosed valve 65 in the present embodiment has the distolateral plectane portion 80 that axial region 78 and axial region 78 are integrally formed at axial region 78.Axial region 78 is inserted and is led in the inserting hole 79 that is formed at pressure control chamber 67.In addition, plectane portion 80 and spring described later 81 are together in the company's of being contained in ventilating part 71.Inserting hole 79 sides of plectane portion 80 spread all over inserting hole 79 around and be provided with protuberance 83 towards inserting hole 79 sides in the mode that becomes projection.The back side of plectane portion 80 (faces of the 1st filter 52 sides) connects an end of spring 81 (force application part a kind of), and the other end of spring 81 connects spring base 73.As mentioned above, spring base 73 is fixed in the bottom surface sections of the 1st filter chamber 66, but spring base 73 is formed with the opening 82 of passage of ink.81 pairs of self-enclosed valves 65 of spring are to the film 22 side application of forces.When the pressure in pressure control chamber 67 is compared not significant decline with external pressure, by these spring 81 application of forces, make plectane portion 80 protuberance 83 and inserting hole 79 the circumference butt and keep the closed condition of self-enclosed valve 65.In addition, be provided with compression plate 77, and compression plate 77 is provided with in the mode with axial region 78 butts in pressure control chamber 67.Compression plate 77 is not fixed in film 22 in the present embodiment.Promptly, in the present embodiment, follow the decline of pressure, film 22 is film 22 and compression plate 77 butts when the 52 side displacements of the 1st filter, thereby when compression plate 77 and film 22 simultaneously to the 52 side displacements of the 1st filter, so thereby compression plate 77 moves self-enclosed valve 65 by displacement with self-enclosed valve 65 butts.
In the present embodiment, because compression plate 77 is not fixed in film 22, in order to make compression plate 77 displacement stably, in pressure control chamber 67, and at the planar limiting part 84a that is formed with 77 displacements of restriction compression plate of the surrounding wall of inserting hole 79.And, with the chimeric limiting part 84b of limiting part 84a in mode around limiting part 84a, and spread all over limiting part 84a around be arranged at the limiting part 84a side of compression plate 77.When being compression plate 77 actions, limiting part 84b and limiting part 84a are chimeric, and compression plate 77 can stably move, and thus, self-enclosed valve 65 is stably moved.In addition, in this case, limiting part 84a, 84b are respectively arranged with slit-shaped openings (not shown), and when self-enclosed valve 65 became open mode, China ink can circulate in limiting part 84a, 84b via this slit-shaped openings.
If effect negative pressure in pressure control chamber 67, promptly, because of the injection of China ink makes the outer air pressure of pressure ratios in the pressure control chamber 67 low, then film 22 is to the 52 side displacements of the 1st filter, while thereby the active force that overcomes spring 81 makes self-enclosed valve 65 make self-enclosed valve 65 become open mode to the 1st filter 52 side shiftings via compression plate 77.Thus, allow from the 1st filter chamber 66 lateral pressures adjustment chamber 67 side inflow China inks.
In addition, film 22 will be provided with the 1st filter chamber 66 sealing of the 1st filter 52, the film 22 in the 1st filter chamber 66 also no longer act on negative pressure (or very little, below, same.) state under, film 22 is with to the state of the 1st filter 52 lateral bending songs and be provided with.In other words, the film 22 in the 1st filter chamber 66 is the curved surface shape under the state that does not act on negative pressure.Film 22 in the 1st filter chamber 66 also is provided with in the mode of bending like this, thereby give negative pressure and discharge the cleaning action of China ink and bubble forcibly from this nozzle 43 after, can suppress to residue in the bubble in the 1st filter chamber 66 at the nozzle 43 that carries out record head 20.
Shown in Fig. 8 (a), in this film 22 with 70 opposed zones, empty chamber, along longitudinal direction, promptly, along with as the 1st filter chamber 66 of the 1st stream, be formed with the frangible portion 88 of allowing film 22 stretchings as the vertical stream 69 of the 2nd stream, the direction that the orientation (laterally) of empty chamber 70 intersects.A plurality of through holes 87 that frangible portion 88 is in the present embodiment arranged by longitudinal direction constitute a wire.In addition, the position is set is to compare the position that vertical stream 69 more is partial to the 1st filter chamber 66 sides in the zone corresponding with empty chamber 70 in the arrangement of this through hole 87.And in film 22, adjacent through hole 87 part each other is more fragile than other parts.By such frangible portion 88 is set, as described later, when film 22 is deposited when importing the two sides of article body 50, or the film 22 in the zone corresponding with the 1st filter chamber 66 is when the 1st filter 52 lateral bendings are bent, shown in Fig. 8 (b), adjacent through hole 87 fragile part each other is out of shape, thereby allows the stretching of film 22.In addition, though do not represent film 22 among Fig. 4, represented to constitute the through hole 87 of frangible portion 88.
Herein, have bubble at the 1st filter 52 and be hunted down, if this bubble coalescence of catching is stopped up the 1st filter 52 of the 1st filter chamber 66, then the effective area of the 1st filter 52 reduces, so printer 1 carries out the cleaning of eliminating bubble as described above termly.In this cleaned, the face that the nozzle of record head 20 is formed the ejection side of substrate 36 sealed with cap assembly 11 grades, produce negative pressure in the cap assembly 11 and, attract China ink thereby the pump action is made from this nozzle 43 to nozzle 43 effect negative pressure, and the elimination bubble.It is being effective aspect the amount that reduces the bubble that cleans the back generation that the volume of the 1st filter chamber 66 during in this case, with cleaning reduces.Reason is that the air that is present in the 1st filter chamber 66 when from the 1st filter chamber 66 attraction China inks when cleaning can become bubble after cleaning is over.Therefore, in the present embodiment, make film 22 bendings with the state that film 22 that seals the 1st filter chamber 66 is not acted on negative pressure in advance, thereby the adjusting channel member in the past that is subjected to the state of tension force (tensile force) with the film of sealing the 1st filter chamber is compared, and can reduce the volume (being divided the volume in the space that forms by the 1st filter chamber 66 and film 22) of the 1st filter chamber 66 when cleaning.Promptly, in adjusting channel member in the past, because the film that is in for sealing the 1st filter chamber applies the state of tension force, so even effect negative pressure when cleaning, film also is difficult to sink and arrives more downstream, and the volume of the 1st filter chamber peace when cleaning does not often almost change.With respect to this, in the present embodiment, because the film 22 of sealing the 1st filter chamber 66 is crooked under the state of effect before the negative pressure, so sink to downstream (the 1st filter 52 sides) easily when cleaning.In addition, because film 22 is crooked states, be difficult to be subjected to reaction force so compare with the state that film is subjected to tension force, film 22 sink easily to downstreams more.Thus, because the volume that can reduce the 1st filter chamber 66 compared with the past can reduce the amount of cleaning the residual bubble in back, so can use the 1st filter 52 effectively.In addition, in the present embodiment, as mentioned above, be formed with frangible portion 88 with 70 opposed zones, empty chamber in the film 22, the film 22 in feasible and 66 opposed zones, the 1st filter chamber is to the 1st filter 52 lateral bending songs so acted on negative pressure when cleaning, even thereby film 22 integral body stretch to the 1st filter chamber 66 laybacks because frangible portion 88 can be allowed film 22 distortion, so the tension force when film 22 is drawn is difficult to prolong and to vertical stream 69 sides.Therefore, be difficult to produce the stretching wrinkle with the film 22 in vertical stream 69 corresponding zones.Prevent that consequently the bubble in the vertical stream 69 from being blocked, catching by wrinkle, can improve the bubble discharge property in the vertical stream 69 when cleaning.In addition, because the through hole 87 of frangible portion 88 along with as the 1st filter chamber 66 of the 1st stream, be provided with as the vertical stream 69 of the 2nd stream, the direction that the orientation (laterally) of empty chamber 70 intersects, so can absorb the tension force of orientation easily.Thus, can be positively the generation of wrinkle be suppressed.
, if it is crooked under the state that does not act on negative pressure the 1st filter chamber 66 to be carried out enclosed areas in the film 22 in advance, film 22 can't sink and reduces the volume of the 1st filter chamber 66 to the 1st filter chamber 66 sides when then cleaning as mentioned above.So, film 22 is deposited when importing channel member main body 50, so that the state of film 22 bendings in the 1st filter chamber 66 is deposited in importing channel member main body 50 with this film 22.Below, be described in detail.
At first, as shown in Figure 9, be contained in not shown anchor clamps with importing channel member main body 50, with the state that imports channel member main body 50 location with respect to this with film with base material 22 ' mounting (mounting operation) on anchor clamps.Film with base material 22 ' on to be formed with not shown dotted line with the roughly the same shape in the side that imports channel member main body 50.In addition, film with base material 22 ' in 70 opposed zones, empty chamber with formation through holes 87 such as puncheres and be pre-formed frangible portion 88, and so that by above-mentioned dotted line region surrounded and import the consistent mode in side of channel member main body 50, by not shown alignment pin with film with base material 22 ' be positioned on the anchor clamps.Afterwards, make the film corresponding with the 1st filter chamber 66 with base material 22 ' part be in state (deformation of thin membrane operation) to the 1st filter 53 lateral bending songs, under this state, use base material 22 ' deposited (fixing) in the side (deposited operation) that imports channel member main body 50 film.Promptly, as shown in Figure 9, push film with base material 22 ' make it by pressing component 91 to the 1st filter 52 lateral bending songs, and cover deposited zone heating film with the deposited division portion 62 of base material 22 ' make it by heater block 92 in the side, thus to film with base material 22 ' carry out deposited with the state of bending in the 1st filter chamber 66.Like this, can make film 22 bendings in the 1st filter chamber 66 with the state that does not act on negative pressure.
At this moment, if at the film that makes the part corresponding with the 1st filter chamber 66 with under the state of base material 22 ' bending, film integral is deposited in the side that imports the channel member main body, then the regional film beyond the 1st filter chamber 66 is easy to produce wrinkle with base material 22 ' be pulled into the 1st filter chamber 66 sides, and if produce wrinkle on the film on the stream, then the part that forms at these wrinkle will be assembled bubble.But in the present embodiment, in film 22, be formed with frangible portion 88 with 70 opposed zones, empty chamber, so when deposited, even with the film 22 in 66 opposed zones, the 1st filter chamber to the 1st filter 52 lateral bending songs, allow film 22 distortion by frangible portion 88, so the tension force when being drawn is difficult to prolong and to vertical stream 69 sides.Therefore, particularly the film 22 in the zone corresponding with vertical stream 69 is difficult to produce the stretching wrinkle.The result can prevent that the bubbles in the vertical stream 69 from being blocked by wrinkle and be captured.In addition, in the present embodiment, constitute frangible portion 88 by a plurality of through holes 87, so that film in the 1st filter chamber 66 is deposited during in importing channel member main body 50 with film integral with the state of base material 22 ' bending, fragile part distortion between the adjacent through hole 87, thus might be near this through hole 87 the generation wrinkle.But the position of offering with through hole 87 is arranged in the corresponding zone, the zone of sky chamber 70 and more is partial to the position of the 1st filter chamber 66 sides than vertical stream 69 as mentioned above, so stream 69 sides are indulged near the wrinkle arrival that can suppress the through hole 87.
Afterwards, remove pressing component 91, heater block 92, and from film with base material 22 ' remove by the zone beyond the dotted line region surrounded, film 22 is fixed to from anchor clamps imports channel member main body 50, and take out the adjusting channel member 21 that film 22 is set with the state to 66 bendings of the 1st filter chamber.And, the liquid of the adjusting channel member 21 of this manufacturing is supplied with the road, be arranged at record head 20 in the mode that is communicated with the record head stream.
Figure 10 be to the frangible portion in the another embodiment of the invention 88 ' the figure that describes of structure.In the present embodiment, make frangible portion 88 ' along longitudinal direction, that is, along with the direction of intersecting as the 1st filter chamber 66 of the 1st stream, as the orientation (laterally) of the vertical stream 69 of the 2nd stream, empty chamber 70, constitute this point by rectangular slit 94, different with the first above-mentioned embodiment.About other formations, identical with the 1st embodiment, so omission is to its explanation.Constituting frangible portion by slit 94 like this has following advantage, promptly, than through hole 87 mutability more, in addition, even under the situation of distortion, also be difficult to produce wrinkle.In addition, when on film 22, being formed with slit 94, compare, can prevent the problem of bringing because of the blinking scrap that produces film 22 with the situation that forms a plurality of through holes 87.
In addition, for frangible portion 88 ' for, as long as more fragile, more yielding, then be not limited to the example of being enumerated in the above-mentioned embodiment than other parts of film 22.That is, be not limited to as the perforation of through hole 87 and slit 94 shape of film 22, for example, also can have adopted following structure, promptly, the thickness by making film 22 is than the thinner frangible portion that forms of thickness of other parts.
In addition, more than be that a kind of printer 1 to liquid injection apparatus is illustrated.But the present invention also can be applicable to other liquid injection apparatus.For example, in the device applicable to the chip manufacturing device of the display manufacturing apparatus of the colored filter of making LCD etc., the electrode manufacturing apparatus that forms the electrode of organic EL (Electro Luminescence) display, FED (face active display) etc., manufacturing biochip (biochemical element) etc.
Claims (6)
1. liquid ejection unit is characterized in that having:
Jet head liquid, it is from nozzle ejection liquid;
Regulate channel member, it is configured in the upstream side of aforesaid liquid injector head, and accept from the liquid of liquid supply source and be supplied to aforesaid liquid injector head side,
One side at least at above-mentioned adjusting channel member is formed with the 1st stream and the 2nd stream, and the 1st stream and the 2nd stream are to be the state of free chamber to form with the between setting, in the 1st stream, be equipped with first filter that liquid is filtered, be equipped with the 2nd filter midway at the 2nd stream, and at least one adhered film at above-mentioned adjusting channel member, by this film, above-mentioned the 1st stream, above-mentioned the 2nd stream and above-mentioned empty chamber are closed with separate respectively state;
Be formed with the frangible portion of allowing film stretching at above-mentioned film with opposed zone, above-mentioned empty chamber.
2. liquid ejection unit according to claim 1 is characterized in that,
Above-mentioned frangible portion is provided with along the direction that the orientation with above-mentioned the 1st stream, above-mentioned the 2nd stream and above-mentioned empty chamber intersects.
3. liquid ejection unit according to claim 2 is characterized in that, above-mentioned frangible portion be by along and the above-mentioned orientation direction of intersecting and the slit that forms constitutes.
4. liquid ejection unit according to claim 2 is characterized in that,
Above-mentioned frangible portion is to arrange a plurality of through holes that are provided with by the direction that edge and above-mentioned orientation intersect to constitute.
5. liquid ejection unit according to claim 4 is characterized in that,
Above-mentioned film to be can changing and crooked state is attached at above-mentioned adjusting channel member according to the pressure in above-mentioned the 1st stream with the opposed zone of above-mentioned the 1st stream in this film,
Above-mentioned frangible portion is formed at the position that above-mentioned the 2nd stream more is partial to above-mentioned the 1st stream side of comparing in the above-mentioned empty chamber.
6. liquid injection apparatus is characterized in that having:
Any described liquid ejection unit in claim 1 or the claim 5; With
Liquid supply source to above-mentioned adjusting channel member feed fluid.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010109038A JP2011235538A (en) | 2010-05-11 | 2010-05-11 | Liquid ejecting unit and liquid ejecting apparatus |
| JP2010-109038 | 2010-05-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102248780A true CN102248780A (en) | 2011-11-23 |
Family
ID=44911431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101140212A Pending CN102248780A (en) | 2010-05-11 | 2011-04-29 | Liquid ejecting unit and liquid ejecting apparatus |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20110279606A1 (en) |
| JP (1) | JP2011235538A (en) |
| CN (1) | CN102248780A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106427223A (en) * | 2012-08-10 | 2017-02-22 | 精工爱普生株式会社 | Liquid container |
| CN108136772A (en) * | 2015-10-30 | 2018-06-08 | 精工爱普生株式会社 | Liquid injection device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6028924B2 (en) * | 2013-02-25 | 2016-11-24 | 株式会社リコー | Image forming apparatus |
| JP6319554B2 (en) * | 2013-12-26 | 2018-05-09 | セイコーエプソン株式会社 | Filter unit, liquid ejecting head, and liquid ejecting apparatus |
| JP2022040498A (en) | 2020-08-31 | 2022-03-11 | セイコーエプソン株式会社 | Liquid discharge device, head driving circuit and liquid discharge head |
| JP2022000338A (en) * | 2020-06-17 | 2022-01-04 | セイコーエプソン株式会社 | Flow channel member, liquid jetting head, liquid jetting device, and method for manufacturing flow channel member |
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| WO2002045964A1 (en) * | 2000-12-06 | 2002-06-13 | Lexmark International, Inc. | Bubble generator for an ink jet print cartridge |
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| JP2009184202A (en) * | 2008-02-05 | 2009-08-20 | Seiko Epson Corp | Flow channel forming member, liquid injection head, and liquid injection device |
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| JP2004074462A (en) * | 2002-08-12 | 2004-03-11 | Sii Printek Inc | Air damper, inkjet head and inkjet recorder |
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| US7413295B2 (en) * | 2004-03-19 | 2008-08-19 | Brother Kogyo Kabushiki Kaisha | Inkjet printer with delivery chamber |
| JP4543952B2 (en) * | 2004-11-17 | 2010-09-15 | ブラザー工業株式会社 | Inkjet head |
| US7837306B2 (en) * | 2005-11-29 | 2010-11-23 | Seiko Epson Corporation | Valve unit with pressure regulating valve assembled in laminate body |
| JP4285540B2 (en) * | 2006-12-28 | 2009-06-24 | ブラザー工業株式会社 | Inkjet head |
| JP2010240925A (en) * | 2009-04-02 | 2010-10-28 | Seiko Epson Corp | Self-sealing unit, liquid ejecting head unit, and liquid ejecting apparatus |
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- 2010-05-11 JP JP2010109038A patent/JP2011235538A/en not_active Withdrawn
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- 2011-04-29 CN CN2011101140212A patent/CN102248780A/en active Pending
- 2011-05-09 US US13/103,816 patent/US20110279606A1/en not_active Abandoned
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|---|---|---|---|---|
| WO2002045964A1 (en) * | 2000-12-06 | 2002-06-13 | Lexmark International, Inc. | Bubble generator for an ink jet print cartridge |
| US20030234845A1 (en) * | 2002-06-21 | 2003-12-25 | Kazuyoshi Tominaga | Ink jet head and ink jet recording apparatus |
| US20050285913A1 (en) * | 2003-06-20 | 2005-12-29 | Seiko Epson Corporation | Liquid injection apparatus and method for driving the same |
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| JP2009184202A (en) * | 2008-02-05 | 2009-08-20 | Seiko Epson Corp | Flow channel forming member, liquid injection head, and liquid injection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106427223A (en) * | 2012-08-10 | 2017-02-22 | 精工爱普生株式会社 | Liquid container |
| CN106427223B (en) * | 2012-08-10 | 2018-04-10 | 精工爱普生株式会社 | liquid container |
| CN108136772A (en) * | 2015-10-30 | 2018-06-08 | 精工爱普生株式会社 | Liquid injection device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011235538A (en) | 2011-11-24 |
| US20110279606A1 (en) | 2011-11-17 |
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Application publication date: 20111123 |